Research/Patents/US 5233155
US 5233155Tier 3 — General Defense

ELIMINATION OF STRIKE-OVER IN RF PLASMA GUNS

Assignee

General Electric

Filed as: GENERAL ELECTRIC COMPANY, A CORP. OF NY

Filed

Feb 13, 1991

Granted

Aug 3, 1993

Location

ALTAMONT NY US

Abstract

Strike-over in an RF plasma gun is eliminated by interposing a grounded isolation device between the plasma jet and the RF coil which supplies energy to the plasma. The isolation device comprises a plurality of separated segments spaced apart in a circumferential direction and electrically connected together at one end and to ground potential. The shield substantially eliminates the parasitic distributed capacitance between the RF coil and the plasma by interrupting the electrical field coupling between the coil and the plasma and shunting most of the capacitive current flow to ground. The invention enables reliable operation of the device at frequencies in the 2-4 MHz range.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Dec 2, 1991

Rescinded

Mar 10, 1993

Duration

1 year, 3 months

Inventor

  • 1GERHARD FRIND

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Back to patent indexSource: USPTO 35 USC §181 secrecy order records